// HTMLParser Library $Name: v1_6 $ - A java-based parser for HTML
// http://sourceforge.org/projects/htmlparser
// Copyright (C) 2004 Derrick Oswald
//
// Revision Control Information
//
// $Source: /cvsroot/htmlparser/htmlparser/src/org/htmlparser/sax/Feedback.java,v $
// $Author: derrickoswald $
// $Date: 2005/04/12 11:27:43 $
// $Revision: 1.3 $
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//

package org.htmlparser.sax;

import org.htmlparser.util.ParserException;
import org.htmlparser.util.ParserFeedback;
import org.xml.sax.ErrorHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

/**
 * Mediates between the feedback mechanism of the htmlparser and an error
 * handler.
 */
public class Feedback implements ParserFeedback
{
	/**
	 * The error handler to call back on.
	 */
	protected ErrorHandler mErrorHandler;

	/**
	 * The locator for tag positions.
	 */
	protected Locator mLocator;

	/**
	 * Create a feedback/error handler mediator.
	 * 
	 * @param handler
	 *            The callback object.
	 * @param locator
	 *            A locator for error locations.
	 */
	public Feedback(ErrorHandler handler, Locator locator)
	{
		mErrorHandler = handler;
		mLocator = locator;
	}

	/**
	 * Information message. <em>Just eats the info message.</em>
	 * 
	 * @param message
	 *            {@inheritDoc}
	 */
	public void info(String message)
	{
		// swallow
	}

	/**
	 * Warning message. Calls {@link ErrorHandler#warning(SAXParseException)
	 * ErrorHandler.warning}.
	 * 
	 * @param message
	 *            {@inheritDoc}
	 */
	public void warning(String message)
	{
		try
		{
			mErrorHandler.warning(new SAXParseException(message, mLocator));
		}
		catch (SAXException se)
		{
			se.printStackTrace();
		}
	}

	/**
	 * Error message. Calls {@link ErrorHandler#error(SAXParseException)
	 * ErrorHandler.error}.
	 * 
	 * @param message
	 *            {@inheritDoc}
	 * @param e
	 *            {@inheritDoc}
	 */
	public void error(String message, ParserException e)
	{
		try
		{
			mErrorHandler.error(new SAXParseException(message, mLocator, e));
		}
		catch (SAXException se)
		{
			se.printStackTrace();
		}
	}
}
